Did the militant group ISIS not exist before Barack Obama became president of the United States in 2009? No, that's not true: Since 2006 ISIS has existed, according to a former member of the National Security Council and according to The Wilson Center, a nonpartisan policy forum in Washington, D.C.
The claim appeared in a Facebook post (archived here) on April 1, 2021, under the title "Spot On....For 8 years Obama called America a Racist Country and Bowed to Foreign Leaders......We are Reaping His Legacy." It opens:
Before Obama we had no ISIS!
This is what the post looked like on Facebook at the time of writing:
(Source: Facebook screenshot was taken on Wed Apr 13 22:40:06 2022 UTC
The Islamic state was founded in 2006 from the former al Qaeda in Iraq. So, there has been an Islamic state since 2006. The only thing that changed while Obama was President was their expansion into Syria.
ISIS is, of course, the linear descendant of the Islamic State of Iraq, which was formed in the immediate aftermath of Abu Musab al-Zarqawi's death and is now led by Abu Baqr al-Baghdadi. In 2006, the Islamic State of Iraq published a veritable 'Federalist Papers.'... ISIS is also known as ISIL, the Islamic State in Iraq and the Levant, and is also referred to by its Arabic acronym, DAASH--all are equivalent terms for the same organization.
The Islamic State - also known as ISIS, ISIL, or Daesh - emerged from the remnants of al Qaeda in Iraq (AQI), a local offshoot of al Qaeda founded by Abu Musab al Zarqawi in 2004. It faded into obscurity for several years after the surge of U.S. troops to Iraq in 2007. But it began to reemerge in 2011. Over the next few years, it took advantage of growing instability in Iraq and Syria to carry out attacks and bolster its ranks.